allocator_type get_allocator() const;
allocator_type get_allocator() const noexcept;
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// map::get_allocator
#include <iostream>
#include <map>
int main ()
{
int psize;
std::multimap<char,int> mymm;
std::pair<const char,int>* p;
// allocate an array of 5 elements using mymm's allocator:
p=mymm.get_allocator().allocate(5);
// assign some values to array
psize = sizeof(std::multimap<char,int>::value_type)*5;
std::cout << "The allocated array has a size of " << psize << " bytes.\n";
mymm.get_allocator().deallocate(p,5);
return 0;
}The allocated array has a size of 40 bytes.